private static bool HasRequiredAccess(PropertyInfo pi, PropertyAccessRequired access)
{
Throw.IfArgumentNull(pi, nameof(pi));
switch (access)
{
case PropertyAccessRequired.Any: return(true);
case PropertyAccessRequired.All: return(pi.CanRead && pi.CanWrite);
case PropertyAccessRequired.Get: return(pi.CanRead);
case PropertyAccessRequired.Set: return(pi.CanWrite);
default:
throw new ArgumentOutOfRangeException("access");
}
}
/// <summary>
/// Searches recursively through an object tree for property information.
/// </summary>
/// <param name="propertyName">The name of the property to search for.</param>
/// <param name="access">The required property access.</param>
/// <returns>PropertyInfo of the specified property if it can find it otherwise returns null.</returns>
public static PropertyInfo GetPropertyInfo(this Type type, string propertyName, PropertyAccessRequired access)
{
return(GetPropertyInfo(type, propertyName, null, access));
}
/// <summary>
/// Searches recursively through an object tree for property information.
/// </summary>
/// <param name="type">The type of the object to get the property from.</param>
/// <param name="propertyName">The name of the property to search for.</param>
/// <param name="propertyType">The type of the property to search for.</param>
/// <param name="access">The required property access.</param>
/// <returns>PropertyInfo of the specified property if it can find it otherwise returns null.</returns>
public static PropertyInfo GetPropertyInfo(this Type type, string propertyName, Type propertyType, PropertyAccessRequired access)
{
Throw.IfArgumentNullOrEmpty(propertyName, nameof(propertyName));
var pi = (propertyType != null)
? type.GetProperty(propertyName,
BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Static, null, propertyType, new Type[0], null)
: type.GetProperty(propertyName,
BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Static);
var hasNoAccess = (pi != null && !HasRequiredAccess(pi, access));
if (pi == null || hasNoAccess)
{
if (type.BaseType != null)
{
pi = GetPropertyInfo(type.BaseType, propertyName, propertyType, access);
}
}
return(pi);
}
